JPH07268748A - Filling knitting machinery having sinker evacuating mechanism - Google Patents

Abstract

PURPOSE:To simplify the structure of an evacuating mechanism capable of preventing retention of hanging yarn at a tooth at a gear edge part occurring in under-swing of a feed pipe. CONSTITUTION:A sinker 24 is supported longitudinally movably based on a gear edge in a sinker fitting groove set at the tip part of a needle head at the side of a yarn feed device to be arranged, the sinker is provided with an operating batting 24d and a cam box is equipped with a sinker control cam 31 for guiding the sinker acting on the operating batting to a retreated evacuating position when a cam box 5 reciprocating on the needle bed passes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a flat knitting machine provided with a yarn feeding device for knitting a warp knitting structure.

[0002]

2. Description of the Related Art As the prior art of the present invention, there is Japanese Patent Publication No. 51-42225 by the present applicant or a flat knitting machine (model name SPL-C092FF) manufactured by the present applicant.
The flat knitting machine of the above-mentioned type not only feeds the knitting yarn to the needle by the yarn feeding tube that reciprocates on the yarn path rail installed above the needle bed mouth, but also uses either the front or rear needle bed. There is provided a yarn feeding device that enables knitting of a warp knitting structure having an arbitrary number of yarn feeding tubes that feed a knitting yarn to the knitting needles of the needle bed that face each other in the upper position. This yarn feeding device is provided with a device that can be swung in the up-and-down direction to wind the knitting yarn on the opposite knitting needle and can move in the longitudinal direction of the needle bed.

The knitting by the yarn feeding device which enables the knitting of the warp knitting structure will be briefly described. An arbitrary knitting needle is passed through the cam box and advanced above the needle bed gap on the needle bed. In the state where the knitting needle has advanced, the yarn feeding device above the opposing needle bed is swung from the lowered position to the raised position by passing each yarn feeding tube through the side of the needle in the advanced position (start of yarn feeding). point). Next, the yarn feeding tube is moved by the desired number of needles in the same direction as the advancing direction of the subsequent cam box, and then the needles are passed again laterally and rocked to the lowered position (yarn feeding end point). By the above operation, the knitting yarn is wound around the abdomen of the needle between the yarn feeding start point and the yarn feeding end point. From this state, the cam box is run to retract the knitting needle that was in the advanced position and draw the knitting yarn to form a stitch. A desired pattern is knitted by repeating the above knitting and feeding the yarn in a zigzag shape while adjusting the lateral movement amount of the yarn feeding tube.

The knitting method is basically based on the above, but when the yarn feeding end point and the next yarn feeding start point differ depending on the desired pattern, the yarn feeding tube of the yarn feeding device is fed in the lowered position. After moving laterally to the starting point, take the ascending position. If the positions of the start point and the end point are significantly different, the yarn feeding tube of the yarn feeder is moved to the next starting point in the lowered position, so that the knitting yarn is laid across the needle bed gap between them. Become. At this time, since the knitting needle is in the advanced position, there is only a small gap between the back surface of the needle and the facing sinker, and thus the knitting yarn that has been bridged cannot be slipped out of the gap and remains. When knitting is repeated in this state,
The problem that the knitting yarn in the retained state sometimes goes around to the hook side of the knitting needle and is caught by the hook.

Therefore, in Japanese Patent Publication No. 51-42225 and SPL-C092FF described above, a device for moving the entire needle bed on the side where the yarn feeding device is arranged to a retracted position (lowering position) is additionally provided, During knitting by the device, the needle bed was retracted to prevent the above problems from occurring. When knitting with the knitting needles of the front and rear needle beds by the knitting yarn of the yarn feeder on the yarn path rail, the needle bed at the retracted position is raised to perform knitting.

[0006]

However, in the above flat knitting machine, since the entire needle bed on the side not related to knitting is retracted, not only the apparatus itself becomes large-scale, but also the manufacturing cost of the apparatus is increased. There was a problem of this. In addition, it takes time to raise and lower the needle bed, which causes a decrease in productivity. Therefore, it is the present invention that has been invented in view of the above problems, a flat knitting machine having a retracting mechanism that can simplify the configuration of the device itself, suppress the manufacturing cost of the device, and prevent the occurrence of the above-mentioned problems in knitting. The purpose is to provide.

[0007]

In order to solve the above-mentioned problems, a plurality of yarn feeding tubes are arranged above one needle bed of a flat knitting machine in which at least a pair of front and rear needle beds are arranged to face each other, and The tip of the thread tube is configured to be vertically movable with respect to the other needle bed in the vicinity of the needle bed gap of the needle bed and movable in the longitudinal direction with respect to the needle bed. In a flat knitting machine equipped with a yarn feeding device that feeds yarn to a knitting needle, the sinker is moved forward and backward with respect to a tooth opening in a sinker mounting groove provided at the tip of the needle bed on the side where the yarn feeding device is arranged. Freely supported and provided with an operating bat on the sinker to act on the operating bat when the cam box that reciprocates on the needle bed passes and retracts the sinker from the tooth gap. The sinker control cams to guide into the retracted position was provided in the cam box.

Further, the sinker control cam is arranged above the knitting lock so as to cover the entire width of the knitting lock. In the stitch forming area of the knitting lock, the sinker is advanced to be used for stitch knitting, and outside the stitch forming area. Then, a cam groove was provided to retract the sinker to the retracted position.

Further, the sinker is arranged above the knitting needle in the groove for mounting the knitting needle, and is prevented from falling off by the fall-off preventing plate fitted on the upper surface of the needle bed, and the sinker is located near the head portion. After being bent in one direction, it extends toward the ostium side so that the leading portion of the sinker is inserted into and supported by the sinker guide groove provided at the tip of the needle bed.

Further, the sinker is formed in such a shape that the upper surface of the sinker has a slope on its upper surface to guide the knitting yarn supplied from the yarn feeder to the needle bed gap.

[0011]

After the passing of the cam box, when the yarn feeding device provided above one needle bed feeds the knitting needles on the other needle bed, the sinker is controlled by the sinker control cam provided on the cam box. Since the retracted and retracted position allows the distance between the back of the knitting needle and the sinker at the needle bed gap to be extended by the retracted position, the knitting end position and the next knitting start position differ greatly when knitting with the yarn feeder. Even when the yarn feeding tube of the yarn feeding device moves laterally at the lowered position and the knitting yarn is bridged from the knitting needle forming the final stitch to the yarn feeding pipe, the knitting yarn continues without staying between the needle bed gaps. During knitting, the knitting yarn does not go around to the hook side of the knitting needle and is guided to the lower side of the needle bed gap and does not hinder the subsequent knitting.
Further, the knitting yarn laid over the above-mentioned tooth gap is smoothly guided to the tooth gap part by the inclined surface formed on the upper surface of the leading portion of the sinker.

[0012]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a view showing a schematic side surface of a flat knitting machine of the present invention. The flat knitting machine 1 is a V-type flat knitting machine in which a front bed 2 and a back bed 3 are arranged to face each other in an inverted V shape.

A lower portion of the cam box 4 on the front bed 2 side is supported by a support rail 6. An inverted L-shaped bracket 7 is erected on the cam box 4. On the upper part of the bracket 7, a entrainment device 8 including a driving means such as an electromagnetic solenoid is provided, and a yarn feeding tube slidably mounted on three rows of yarn guide rails 9 provided above the needle bed. 10 is carried during the moving stroke of the cam box to feed the knitting needles 11 on the needle bed. The cam box 4 including the bracket 7 is fixed to the main body of the flat knitting machine and has its upper portion supported by a support rail 12 extending in the longitudinal direction of the needle bed. The cam box 4 reciprocates on the front bed 2 by a driving means (not shown). It is configured to be driven. The cam box 4 of the front bed 2 has a cam lock for knitting with the yarn feeding tube 10 and a yarn feeding device 15 described later.
A cam lock is provided for knitting using.

The lower part of the cam box 5 on the back bed 3 side is supported by a support rail 13 and the upper part thereof is supported by a support rail 14 installed on a needle bed. The back box 3 is driven by a driving means (not shown). It is designed to travel back and forth. Cam box 4,
5 can run in synchronism with each other, or only the front cam box 4 can be run for knitting.

In the embodiment of the present invention, a yarn feeding device 15 is provided above the back bed 3 to feed the needles of the front bed 2. In the yarn feeder 15,
Yarn supply tubes 16a, 16b, 16c, 16 consisting of four rows
d is provided and a plurality of yarn feeding tubes are attached to each row. Although not shown, the yarn feeding device 15 can be moved up and down with respect to the front bed 2 in the vicinity of the needle bed gap 17 by the driving means provided on the knitting machine main body side, and the yarn feeding tube 13 of the yarn feeding device 15 is a servo. The yarn feeder 16 is fixed to a belt of a belt drive system composed of driving means such as a motor and is movable in the longitudinal direction of the needle bed, whereby the yarn feeding tube 16 moves laterally in an ascending position (overswing) or laterally in an descending position (under). It is configured such that an arbitrary operation such as swinging can be performed to feed the yarn to a predetermined knitting needle. The above-mentioned movement of the needle bed in the longitudinal direction can be performed independently in each row of yarn feeding tubes. Further, knitting yarns are supplied to each yarn feeding tube 13 of the yarn feeding device 15 from a creel set on a creel stand arranged in the rear direction of the knitting machine so as to intersect the back bed 3.

Next, the structure of the needle bed will be described. Since the configuration of the front bed 2 is the same as the conventional configuration, the description thereof will be omitted here for convenience, and the configuration of the back bed 3 which is the main part of the invention of the flat knitting machine of the present invention will be described. To do. FIG. 2 is a partially enlarged view of the backbed 3 side of the flat knitting machine shown in FIG. FIG. 3A shows a needle bed substrate 20, a needle plate 21, and a sinker 2 which constitute the back bed 3.
4 is shown respectively, and FIG. 3B is a plan view of the back bed 3 in a state where the cap 25 is removed. As shown in FIGS. 2 and 3, the back bed 3 has a required number of grooves 22 for mounting the needle plates 21 formed on the needle bed substrate 20 in the longitudinal direction thereof, and the needle plates 21 are mounted in the grooves 22. After being positioned by the locking wire 32 that is inserted across the needle bed substrate 20, the tail portion of the needle plate 21 is caulked and fixed to the needle bed substrate 20. Each needle plate 2
The groove formed between 1 and 21 is used as a needle groove, and the knitting needle 11, the jack 23 and the like are inserted. A knitting needle having a transfer member 36 is mounted as the knitting needle 11, and the needle plate 21 is formed with a thin portion 21a as an insertion space for the transfer member 36. The sinker 24 is the knitting needle 11
Is arranged above the knitting needle 11 with the upper surface of the above as a sliding surface. The knitting needle 11 and the sinker 24 are prevented from falling off from the needle bed by a drop-off prevention plate 25 fitted on the upper surface of the needle bed.

The sinker 24 has a bent portion 24 in front of the leading end.
The lower portion of the sinker head portion 24b having a is inserted and supported in a sinker guide groove 26 provided in communication with a mounting groove 22 of the needle plate 21 at the tip of the needle bed substrate 20. The sinker head portion 24b is formed with a sloped inclined portion 24c on its upper surface so that the knitting yarn supplied from the yarn feeding tube 13 is guided in the needle bed gap direction. The sinker 24 is provided with a scooping part 24f on one side surface of the main body so as not to easily move in the needle groove, and at the location of the scooping part 24f so as to obtain an appropriate sliding resistance with the side wall of the needle plate 21. The main body is bent so that it is pressed against the needle plate 21 side. Further, the sinker 24 is provided with a bat 24d for operating the sinker on its tail. A stopper 24e is provided in front of the butt 24d to limit the upper limit position in the forward / backward direction.

FIG. 4 shows the layout of the cams provided in the cam box 5, which shows the butt 23 of the jack 23.
Only the part relating to the operation of a and the operation of the bat 24d of the sinker 24 is shown, and other parts are omitted. The knitting lock 27 for operating the jack 23 has a needle raising cam 28 in the center and a center cam 2 above it.
9. Claps 30a, 30 on both sides of the center cam 29
b is arranged. The stitches 30a, 30b are individually slidable in the arrow direction by a driving means (not shown) and adjusted according to the size of the stitches to be formed. A sinker control cam 31 is provided on the side closer to the upper mouth of the knitting lock 27.
Is provided, and the butt 24d of the sinker 24 is engaged with the cam surface of the cam groove of the sinker control cam 31 to perform the forward / backward operation of the sinker. The cam groove of the sinker control cam 31 covers the area of the cam lock 27 as shown in FIG.
The cam groove 31a of the sinker control cam 31 guides the sinker 24 to the advanced position while the knitting needle 27 forms the stitches of the knitting needle, and the cam groove 31b of the sinker control cam 31 guides the sinker 24 outside the cam lock 27. It is guided from the needle bed gap 14 to the retracted position retracted.

Further, the stitches 30a and 30b are not only driven and controlled for forming stitches, but also act on the knitting needles 11 as well as when the sinkers 24 take the retracted position after passing the cam box 5. Then, the knitting needle 11 is driven and controlled so as to be guided to the retracted position. For the retreating operation of the knitting needle 11, a cam for retreating may be provided outside the knitting lock 27 instead of the stitch 30.

Next, the operation of the device having the above-mentioned structure, particularly the under swing when the end point and the next start point of the knitting are different will be described. Yarn feeder 15
In order to supply the yarn to the knitting needle 11 of the front bed 2 by the yarn feeding tube 16, the desired knitting needle 11 is selected when the cam box 4 passes, and the advance position shown in FIG. 5 is taken. After the cam box 4 has passed, the yarn feeders 1 in four rows of the yarn feeder 15
The yarn feeding pipes 16b in the second row out of No. 6 are underwent to the position of the predetermined knitting needle 11b serving as the knitting start point, and then moved to the raised position shown in FIG. Next, after overswing from the state of FIG. 6 to the position of the knitting needle 11c (not shown) at the knitting end position, the yarn feeding tube 16 is passed to the side of the knitting needle 11c to the same descending position as shown in FIG. And move. Meanwhile, the yarn feeding tubes 16a, 16c, 16d in the other rows are
As in the case of b, the yarn is fed to each predetermined knitting needle.

At the time of under swinging, the yarn feeder 16b in the second row
The knitting yarn 35b is laid between the last knitting needle 11a after the knitting and the knitting needle 11b at the next starting point to cover the needle bed gap, but when the cam box 5 passes, the back bed 3 The sinker 24 is retracted from the position shown by the broken line in FIG. 5 to the position shown by the solid line under the action of the sinker control cam 31, so that the interval between the back surface of the knitting needle 11 in the raised position and the facing sinker is widened. Because of this, the knitting yarn 35 does not stay between the needle bed gaps and is guided downwardly between the needle bed gaps without going around the hook side of the knitting needle 11 in the subsequent knitting. In addition, since the inclined surface 24c is formed on the top surface of the leading portion of the sinker 24, the knitting yarn has the inclined surface 24c.
Sliding off c, it is smoothly guided to the mouth part.

In the embodiment of the present invention, the sinker control cam is constructed as a fixed cam, but a knitting needle of the front and rear needle beds is fed with knitting needles by using a yarn feeding tube that slides on the yarn guide rail. In this case, the sinker control cam is drive-controlled so that the retractor operation is performed only when the knitting needle of the front bed knits the yarn by the yarn feeding tube of the yarn feeder 15 without retracting the sinker. Of course, it goes without saying that the present invention can be implemented without departing from the spirit of the present invention.

[0023]

As described above, since the sinker is moved back and forth by the cam of the cam box, and when the cam box passes, the sinker is guided to the retracted position, the back surface of the knitting needle in the advanced position and the sinker are Since the space is widened, even if the yarn feeding pipe of the yarn feeding device is under-swinged, the knitting yarn does not stay between the needle gaps and does not hinder the subsequent knitting. Moreover, since the structure of the device is simplified, the manufacturing cost of the device can be suppressed.

Further, during knitting by the knitting cam of the cam box, at least the sinker can take the advanced position to exert the function as the sinker at the time of forming stitches.

Since the sinker is mounted in the groove common to the knitting needle so as to be able to move forward and backward, the structure of the needle bed itself is not complicated, and the sinker made of a thin plate material has its leading end in the sinker guide groove. Positioning is stabilized because it is guided.

Further, since the inclined surface is provided at the leading portion of the sinker, the knitting yarn is smoothly guided into the needle bed gap during under swinging.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic side view of a flat knitting machine of the present invention.

FIG. 2 is an enlarged view showing a main part of FIG.

FIG. 3a is a view showing main parts constituting a back bed. FIG. 3b is a plan view of the needle bed.

FIG. 4 is a diagram showing a cam layout of a cam box on the back bed side.

FIG. 5 is a diagram showing a state in which the yarn feeding tube is in a lowered position and before under swing is performed.

FIG. 6 is a diagram showing a state in which the yarn feeding tube is in a raised position and before overswing is performed.

[Explanation of symbols]

 5 ... Cam box 15 ... Yarn supply device 16 ... Yarn supply tube 20 ... Needle bed substrate 21 ... Needle plate 24 ... Sinker 26 ... Sinker guide groove 31 ... Sinker control cam

Claims (4)

[Claims] 1. A plurality of yarn feeding pipes are provided above one needle bed of at least a pair of front and rear needle beds of a flat knitting machine facing each other, and the tip end of the yarn feeding pipes is near the mouth of the needle bed. And a yarn feeding device configured to move up and down with respect to the other needle bed and movable in the longitudinal direction with respect to the needle bed, and to feed the knitting needles on the other needle bed facing the other. In the flat knitting machine, the sinker is provided with an operating butt in the sinker mounting groove provided at the tip of the needle bed on the side where the yarn feeding device is provided, so that the sinker can advance and retreat with respect to the needle bed gap. The sinker control cam that acts on the operating butt when the cam box that reciprocates on the needle bed passes and guides the sinker to the retracted position retracted from the tooth gap. A flat knitting machine having a sinker retracting mechanism, which is provided in a cam box. 2. The sinker control cam is arranged above the knitting lock so as to cover the entire width of the knitting lock. In the stitch forming area of the knitting lock, the sinker is advanced to be used for stitch knitting, and the outside of the stitch forming area is provided. 2. A flat knitting machine having a sinker retracting mechanism according to claim 1, further comprising a cam groove for retracting the sinker to the retracted position. 3. The sinker is arranged above the knitting needle in a groove for mounting the knitting needle, and is prevented from falling off by a fall prevention plate fitted on the upper surface of the needle bed, and the sinker is located near the head portion. 3. The sinker retracting mechanism according to claim 1 or 2, wherein the sinker leading end portion is bent toward one side and extends toward the needle bed gap side, and the sinker leading end portion is inserted into and supported by a sinker guide groove provided at the tip of the needle bed. Flat knitting machine. 4. The sinker has a shape in which a top surface of the sinker has a slope on its upper surface so as to guide the knitting yarn supplied from the yarn feeding device to the needle bed gap portion. A flat knitting machine having a sinker retracting mechanism according to any one of the above.